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            <div><h4 class="title">
                <a name="asio.overview.model.library_elements"></a><a class="link" href="library_elements.html"
                                                                      title="Supporting Library Elements">Supporting
                Library
                Elements</a>
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    <p>
        The Asio asynchronous model is enabled by the library elements listed in
        the table below.
    </p>
    <div class="informaltable">
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            <colgroup>
                <col>
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            <thead>
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                <th>
                    <p>
                        Library Element
                    </p>
                </th>
                <th>
                    <p>
                        Description
                    </p>
                </th>
            </tr>
            </thead>
            <tbody>
            <tr>
                <td>
                    <p>
                        <code class="computeroutput"><span class="identifier">completion_signature</span></code>
                        concept
                    </p>
                </td>
                <td>
                    <p>
                        Defines valid completion signature forms.
                    </p>
                </td>
            </tr>
            <tr>
                <td>
                    <p>
                        <code class="computeroutput"><span class="identifier">completion_handler_for</span></code>
                        concept
                    </p>
                </td>
                <td>
                    <p>
                        Determines whether a completion handler is callable with a given
                        set of completion signatures.
                    </p>
                </td>
            </tr>
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                <td>
                    <p>
                        <a class="link" href="../../reference/async_result.html" title="async_result">async_result</a>
                        trait
                    </p>
                </td>
                <td>
                    <p>
                        Converts a completion signature and completion token into a concrete
                        completion handler, and launches the operation.
                    </p>
                </td>
            </tr>
            <tr>
                <td>
                    <p>
                        <a class="link" href="../../reference/async_initiate.html"
                           title="async_initiate">async_initiate</a>
                        function
                    </p>
                </td>
                <td>
                    <p>
                        Helper function to simplify use of the <code class="computeroutput"><span class="identifier">async_result</span></code>
                        trait.
                    </p>
                </td>
            </tr>
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                <td>
                    <p>
                        <code class="computeroutput"><span class="identifier">completion_token_for</span></code>
                        concept
                    </p>
                </td>
                <td>
                    <p>
                        Determines whether a completion token produces a completion handler
                        for a given set of completion signatures.
                    </p>
                </td>
            </tr>
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                <td>
                    <p>
                        <a class="link" href="../../reference/associator.html" title="associator">associator</a> trait
                    </p>
                </td>
                <td>
                    <p>
                        Automatically propagates all associators through layers of abstraction.
                    </p>
                </td>
            </tr>
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                <td>
                    <p>
                        <a class="link" href="../../reference/associated_executor.html" title="associated_executor">associated_executor</a>
                        trait, <code class="computeroutput"><span class="identifier">associated_executor_t</span></code>
                        type alias, and <a class="link" href="../../reference/get_associated_executor.html"
                                           title="get_associated_executor">get_associated_executor</a>
                        function
                    </p>
                </td>
                <td>
                    <p>
                        Defines an asynchronous agent’s associated executor.
                    </p>
                </td>
            </tr>
            <tr>
                <td>
                    <p>
                        <a class="link" href="../../reference/associated_allocator.html" title="associated_allocator">associated_allocator</a>
                        trait, <code class="computeroutput"><span
                            class="identifier">associated_allocator_t</span></code>
                        type alias, and <a class="link" href="../../reference/get_associated_allocator.html"
                                           title="get_associated_allocator">get_associated_allocator</a>
                        function
                    </p>
                </td>
                <td>
                    <p>
                        Defines an asynchronous agent’s associated allocator.
                    </p>
                </td>
            </tr>
            <tr>
                <td>
                    <p>
                        <a class="link" href="../../reference/associated_cancellation_slot.html"
                           title="associated_cancellation_slot">associated_cancellation_slot</a>
                        trait, <code class="computeroutput"><span
                            class="identifier">associated_cancellation_slot_t</span></code>
                        type alias, and <a class="link" href="../../reference/get_associated_cancellation_slot.html"
                                           title="get_associated_cancellation_slot">get_associated_cancellation_slot</a>
                        function
                    </p>
                </td>
                <td>
                    <p>
                        Defines an asynchronous agent’s associated cancellation slot.
                    </p>
                </td>
            </tr>
            </tbody>
        </table>
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            <div class="copyright-footer">Copyright © 2003-2022 Christopher M. Kohlhoff<p>
                Distributed under the Boost Software License, Version 1.0. (See accompanying
                file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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